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 TM 5-2420-222-20-1
VALVES - CONTINUED
ACTION
LOCATION
ITEM
REMARKS
ADJUSTMENT - CONTINUED
1.
Cover (1) and
Pin (3)
Using 314-inch open-end wrench, unscrew
housing (2)
and take out.
2.
Housing (2)
Cover (1)
Take off.
3.
Crankshaft
Hydraulic pump
Using 1 to 2-inch adjustable pipe wrench,
pulley (4)
drive shaft (5)
turn until number one cylinder is at top dead
center.
Number one cylinder is at top dead
center when both of Its valves are fully
closed and hole In flywheel is alined with
timing hole in housing.
NOTE
If pin cannot be Inserted all the way into flywheel, repeat step 3.
4.
Housing (2) and
Pin (3)
Slide through timing hole in housing (2)
flywheel (6)
until seated in hole in flywheel (6).
5.
Number one and
Two valves (9 and
While measuring clearance between valves
number three
10) and two
(9 and 10) and rocker arms (7 and 8) with
exhaust valve
adjusting screws
thickness gage, using 1/2-inch open-end
rocker arms
(11 and 12)
wrench, turn screws (11 and 12) in or out
(7 and 8)
as needed to get correct clearance.
Correct clearance is 0.018 inch (0.46 mm).
6.
Number one and
Two valves (15 and
While measuring clearance between valves
number two
16) and two
(15 and 16) and rocker arms (13 and 14)
intake valve
adjusting screws
with thickness gage, using 112-inch open-
rocker arms
(17 and 18)
end wrench, turn screws (17 and 18) in or
(13 and 14)
out as needed to get correct clearance.
Correct clearance Is 0.014 Inch (0.36 mm).
7.
Housing (2) and
Pin (3)
Take out.
flywheel (6)
8.
Crankshaft
Hydraulic pump
Using 1 to 2-inch adjustable pipe wrench,
pulley (4)
drive shaft (5)
turn until number four cylinder is at top dead
center.
2-150
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